alexnc03
alexnc03 alexnc03
  • 21-08-2019
  • Mathematics
contestada

find the volume , in terms of pi, of a sphere if its surface area is 100 pi ft^2​

find the volume in terms of pi of a sphere if its surface area is 100 pi ft2 class=

Respuesta :

jimrgrant1 jimrgrant1
  • 21-08-2019

Answer:

see explanation

Step-by-step explanation:

To calculate volume (V) we require to find the radius r

Given SA = 100π, then

4πr² = 100π ( divide both sides by 4π )

r² = [tex]\frac{100\pi }{4\pi }[/tex] = 25 ( take the square root of both sides )

r = [tex]\sqrt{25}[/tex] = 5

Hence

V = [tex]\frac{4}{3}[/tex]π × 5³

   = [tex]\frac{4}{3}[/tex]π × 125

   = [tex]\frac{4(125)}{3}[/tex] π

   = [tex]\frac{500}{3}[/tex] π ft³

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